Speed-regulating pulley.



P. W. PETERSON. SPEED REGULATING PULLEY. APPLICATION II'LED MAY 27,1911.

1,050,289, Patented Jan.14, 1913.

EIGT- 1-.

UNITED srrns 1:

a a 5 i k xi FREDERICK w. PETERSON,

or OAKLAND, cemronum.

sPEED-REGULA'IING PULLEY.

Specification of 'Letters Patent. Application filed May 27, 1911.

Patented J an. 14, 1913. Serial No. 629,761.

5 State of California, have invented certain new and useful Improvementsin Speed- Regulating Pulleys, of which the following is a specification;reference being had to the accompanyingdrawings.

Thisinvention relates to speed regulating pulleys and more particularlyto that class used on inotor cycles for regulating the speed thereof,and the invention consists of an improved speed regulating pulley inconnection with which the driving belt operates, said pulley beingmounted on and'used in connection with the crank shaft of the motor. A

A further object of the. invention is to provide a pulley will possessadvantages in points of efficiency, durability, is inexpensiveofmanufacture and at the same time being simple in construct-ion andoperation.

With the foregoing and other objects in view the invention consists inthe novel features of construction and'the combinationand arran ement ofparts hereinafter dein the accompanying drawings, inwhich Figure 1 is aside elevation showing my improved speed regulating pulley in connectionwith a motor and showing also a part of the frame of a motor cycle andthe method of using the device; and Fig. 2 is a transverse sectionalview of the pulley.

Referring more particularly to the drawing '1 indicates the motor of anordinary motor cycle, and 2 indicates the crank shaft of said motor. Theconnection between the crank shaft and motor is notshown, but it willbeunderstood that said crank shaft is connected with the motor in theusual man-'.

ner. Mounted hub 3 provided one side of the to the hub 3 by said boltsbeing upon the crank shaft 2 is a means of the screw bolts 6, providedwith an enlarged end 7 adapted to fit tightly up against the diskholding the latter rigidly up against the hub. The disk 5 is providedwith the recess 8 adapted to receive the inner end of the shaft 2, andthe outer edge of the disk is disposed beyond the periphery of the huborming a guide for the belt pulley 9 disposed between'the fiange 4 andthe outer of this character which. metal scribed, pointed out in theclaims and shown with a flange 4 constituting pulley. A disk 5 issecurededge of the disk 5. 'vided with the ball bearings 10, the pulley9 runningfree on the hub so thatthere will be no motion conveyed to thecycle. 4

A centrally arranged shaft 11 is provided having its inner end threadedinto the disk 5 at a central point. Slidably mounted on the shaft 11 isa tubular hub 12 having the flange 13 formed integral therewith, saidhub being adapted to receive the disk 5 secured 7 of the bolts 6 areadapted to be disposed in the openings 14 formed in the hub 12 at itsclosed end, said bolts being adapted to The belt pulley 9 isproto thehub 3. .The enlarged heads hold the flange 13 in place against angularmovement.

A regulating disk 14" is slidably mounted on the shaft 11 and providedwith the ball bearings 15 adapted to roll against a sheet plate. 16disposed between the closed end of the hub 12 and the disk 14', saiddisk being provided with an annular flange 17 adapted to be disposed ina notch 18 in, the hub and acting as as guide for the disk 14'. Formedintegral with the disk 14: is a sleeve 19, which is interiorly threadedas shown at 20, the threads 20 being adapted to engage with the threads21 formed on the sleeve 22 whichis mounted on the shaft 11 and providedwith the ball bearings 23 so that the shaft 11 will rotate within thesleeve. The sleeve 22 is provided with an outer flange 23 to hold thesleeve 19 'in place.

' The outer end of the shaft 11 is screw threaded as shown at 24 and anut 25 threaded thereon. Secured to the v flange 23 by means of thescrews 26 is a brace 27 having its other end secured to the frame of themotor cycle in any desired manner. Mounted on the sleeve 19 is asprocket 28, which is operated by the chain 29, said chain bein'operatedby means of a sprocket 30 mounted on thehorizontal member 31 ofthe cycle frame. The sprocket 30 is operated by means of a small handcrank 32, which through the medium of the sprocket 30 and the chain 29operates the sprocket 28 turning the sleeve 19 on the threaded sleeve22, forcing the disk 14' against the hub 12 which in turn willfrictionally en-' gage the V-shaped belt 33 forcing the same outwardlybetween the flanges 13 and 4 transmitting motion from the crank shaft.

The pulley 9 is provided with a V-shaped recess 9 to receive the belt 33and it will be the pulley 9 when it is not desired to communicate motionto the motor cycle.

Secured to the shaft on which the sprocket 30 is mounted, and adapted towind on said shaft is a cord 34 which is passed around a pulley 35 anddownwardly, and connected at 36 with an arm 37 pivoted to the casing 38and provided with a roller 40 which bears on the lower side of thebottom reach of the driving belt 33.

With this construction it will be seen that the turning of the sprocket30 will result in the forcing of the flange 13 toward the flange 4L andfrictionally engaging the belt 33 between the two flanges causing thesame to ride upward in the V-shaped space between the opposing faces ofthe flanges, and imparting motion to the motor cycle. As the flange 13is moved toward the flange 4 it will thus increase the eflectivediameter of the pulley and will tend to increase the speed of the motorcycle. The cycle is stopped by sliding the disk 14: back in its normalposition, when the belt will force the flange 13 back from the flange 4:and drop down on pulley 9, allowing the engine to run free and the beltand cycle will re main stationary. The operation of rotating thesprocket also results in regulating the tension of the driving belt 33,this operation being accomplished by the cord' 34: and the arm 37. theroller 40 of which operates in connection with the under side of thebottom reach of said belt.

It will be understood that the flanges 1?. and t form a pulley, thediameter of which is increased or decreased by the operation of theapparatus as herein described and this operation may be effected Whilethe motor is in operation, and a continuous progressive speed ratiowithout jerks or jars may thus be obtained regardless of the speed ofthe motor.

While I have shown and described the preferred construction of myinvention it will be obvious that various changes in the noaaaee detailsof construction and in the proportions may be resorted to forsuccessfully carrying the invention into practice without sacrificingany.of the novel features or departing from the scope thereof.

Having thus described my invention I claim: i

1. In a device of the character described, the combination of a driveshaft, 1 a hub fixed thereon provided with a flange, a disk detachablysecured to said hub, a second hub provided with a recess for receivingsaid disk, bolts extending from said disk and operating within openingsformed in the rear wall of the second hub, said sec ond hub beingprovided withafiange which is arranged opposite the first mentionedflange, a shaft extending from said disk, a pressure disk slidablymounted upon said shaft and provided with a flange, an interiorlythreaded sleeve formed integral with said pressure disk, the flange ofsaid pressure disk being adapted to operate within an annular grooveformed in the second mentioned hub, a threaded sleeve mounted upon saidshaft and adapted to engage the interiorly threaded sleeve and means forrotating said pressure disk whereby the second hub will move toward thefirst mentioned hub substantially as described.

2. In a device of the character described the combination with a speedregulating pulley, a sprocket wheel mounted thereon, a crank shaft, asprocket wheel on said shaft, a sprocket chain connecting saidsprockets, a frame, a lever pivotally mounted upon said frame, a rollermounted upon said lever, a flexible member connecting said lever withsaid crank shaft, a belt extending over said pulley, said roller adaptedto engage said belt whereby rotating the said crank shaft the speedregulating pulley and lever will be operated simultaneouslysubstantially as described.

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses.

FREDERICK W. PETERSUII Witnesses FRANKLIN Howns, IIowARn .I. Pnmson.

